Harrow or soil-pulverizer



(No Model.)

J. SOHINDLER.

HARROW OR SOIL PULVERIZER.

No. 295,820; Patented Mar. 25,1884.

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,NITED STATES PATE T OFFICE.

JACOB SGHINDLER, OF KOELTZTOWN, ASSIGNOR OF ONE-HALF TO HERMAN I LUEOKENHOFF, OF WESTPHALIA, MISSOURI.

HARROW O R SOlL-PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 295,820, dated March 25, 1884.

Application filed July 23, 1883.

To aZZ whom, it may concern.

Be it known that I, JACOB SCHINDLER, a

citizen of the United States, residing at Koeltztown, in the county of Osage and State of Missouri, have invented certain new and useful Improvements in Harrows; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled inthe art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure l is a top view of my improved rotary harrow. Fig. 2 is a partial end View of the same; and Fig. 3 is a'vertical section on line :0 r, Fig. 1.

Similar letters of reference indicate corresponding parts in all the figures. Myinvention relates to revolving harrows, or so-called soil-pulverizers, having toothed rollers revolved by suitable connections to the drive-wheels; and it consists in the improved construction and combination of parts of such a harrow, as hereinafter more fully described and claimed. p In the accompanying drawings, the letter A indicates the axle of the harrow, upon the ends of which the wheels B turn, to the hubs of which wheels the sprocket-pulleys D are secured. Two sprocket-chains, K K, pass over the sprocket-pulleys D and over sprocket-pulleys G G at the ends of two shafts, F F, which shafts are journaled in the lower ends of two inclined frames, E E, hinged at their upper ends to two uprights, G, the lower reduced ends, L, of which slide in two vertical perforations or bearings, M, in the axle. An 11 right, N, is secured upon the middle of the axle, near the. drivers seat, and alever, O, is pivoted near one end in the end of the upright, and is provided with a spring-pawl, P, which engages a rack, Q, secured to the upright. The under side of the lever is provided with a cogged segment, R, around its fulcrum, which segment engages a corresponding segment, S, upon the inner end of an arm, T, which is pivoted in the upper portion of the upright below the lever, and bears with its outer end un- 50 der the upper cross-bar, U, of the rcarwardly- (No model.)

" inclined frame E, while the short end of the lever is hinged by means of a short link, V, to the upper cross-bar, W, of the forwardly-inclined frame E. It will now be seen that by tilting the lever rearward the. cross-bars of 5 5 the frames will be raised and at thesame time forced outward, the reduced ends of the uprights, upon which the frames are hinged, sliding upward in their bearings with the frames; and it will be seen that in raising the frames and their sprocket-pulleys, while the sprocket-pulleys upon the axle remain in their place, the chains will be slackened, which slack will be taken up by the lower ends of the frames being forced apart by the ends of the lever and of the short arm. The shafts F and F are provided upon their ends, inside the bearings in the hinged frames, with disks H and H, in the inner sides of which a number of transverse bars, I and J, are pivoted, which bars are provided with a number of curved cutters or heaters, I and J having the edges facing in the direction of the revolution of the shafts and disks, so that the sharp edges of the cutters will strike the ground with 7 5 a chopping motion. The sprocket-pulleys upon the forward cutter-shaft are smaller than the pulleys upon the wheels, but larger than the pulleys upon the rear shaft, and it will thus be seen that the forward shaft will revolve faster than the wheels, but slower than the rear shaft, the forward cutters chopping with their slower motion the larger clods and similar obstructions, preparing the ground for the rear cutters, which by their quicker motion pulverize the soil.

The operation of my harrow will now be. readily understood without further explanation, it being obvious that the cutters and their frames may be raised and lowered according o to the depth to which it is desired tocultivate the ground, or be entirely raised off the ground by tilting the lever, the lever raising the frames, and the weight of the frames drawing it down toward the ground.

Having thus described myinvention, I claim and desire to secure by Letters Patent of the United States- 1. The combination, in a revolving harrow,

of the axle mounted upon the wheels and hav- 10o ing vertical perforations or bearings near its ends, two uprights adapted to slide in the'vertical bearings, two inclined frames hinged at their upper ends upon the uprights, and provided with revolving cutters at their lower ends, an upright secured upon the middle of the axle, and having a rack secured upon one side, a lever pivoted in the upper end of the upright, having its shorter arm hinged to the upper cross-bar of one of the frames, having a pawl engaging the rack upon the upright, and provided with a cogged segment upon its under side at its fulcrum, and a short arm pivoted in the upright below the lever, having its outer end engaging under the upper cross-bar of the other hinged frame, and having a oogged segment upon its inner end engaging the segment upon the lever, as and for the purpose shown and set forth.

2. The combination, in a revolving harrow, of the drive-wheels provided with sprocketpulleys, two inclined frames hinged at their upper ends upon uprights upon the axle of the harrow and forming bearings at their lower ends, shafts turning in the bearings of the lower ends of the frames, disks secured upon the shafts and forming bearings in theirinner faces, transverse bars pivoted at their ends in the hearings in the disks, and having curved cutters sharpened at the edges facing in the direction of the revolution of the disks, sp rocket-pulleys secured upon the ends of the shafts, the pulleys upon the forward shaft being smaller than the pulleys'upon the drive-wheels, but larger than the pulleys upon the rear shaft, and sprocket-chains passing over the wheelpulleys and over the pulleys upon the shafts,

as and for the purpose shown and set forth.

3. The combination, in a revolving harrow, of the axle having vertical perforations or bearings near its ends, the drivewheels turning upon the ends of the axle and having s ivrocket-pulleys secured to their hubs, up-

said bearings and having sprocket-pulleys at their ends, and disks inside the bearings pro vided with pivoted cutter carrying bars, sprocketchains passing over the wheel-pulleys and over the pulleys upon the shafts, an upright secured upon the axle and having a rack at one side, a lever pivoted in the upright and having its short arm hinged to the upper end of one of the inclined frames, having a cogged segment upon its under side around its fulcrum, and having a pawl engaging the rack upon its longer arm, and an arm pivoted under the lever in the upright having a cogged segment at its inner end meshing with the segment upon the lever, and having its outer end engaging under the upper crossbar of the other inclined frame, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

JACOB SGHINDLER.

Vitnesses:

HENRY HENKE, lVIIOHAEL ENGEL. 

